Correct

不识好歹

/ bù shí hǎo dǎi /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/不识好歹-Chinese-idioms-Cchatty-78c5c707-b301-4a66-a2e4-14b6ead75f54-1612776262.jpg

Collocation

1
不识好歹的人
2
这么不识好歹
3
太不识好歹了
4
真是不识好歹

Definition

不识好歹:

Literally means:

cannot tell good from bad

Actually means:

识, know. 歹, evil. It means failing to distinguish good and bad or to understand somebody else's good intention.

It is often used to scold a person who does not acknowledge others'favor. Derogatory.

识,知道。歹,坏。不识好歹,分辨不出好和坏,不懂别人的好意。

常用来指责对别人的好意不领情的人。具有贬义色彩。

Example

Used as predicate or attributive. (作谓语、定语)
1
Rénjiā
人家
qǐng
dāng
píngwěi
评委
  
,
shì
kànde
看得起
  
,
yǒu
有意
bāng
chūmíng
出名
  
,
què
shíhǎodǎi
不识好歹
  
,
kǒu
huíjué
回绝
le
  
,
zhēnshi
真是
shūdāizi
书呆子
  

People ask you to be a judge, is to see you, intend to help you become famous, you do not know good, a rebuff, really a nerd.

2
de
qiánbāo
钱包
diào
zài
shang
地上
  
,
pángbiān
旁边
de
xiǎohuǒzi
小伙子
bāng
shè
lai
起来
  
,
dàn
不但
biǎoshì
表示
gǎnxiè
感谢
  
,
fǎnér
反而
guài
rénjiā
人家
duōguǎnxiánshì
多管闲事
  
,
zhēnshi
真是
shíhǎodǎi
不识好歹
  
!

Her purse fell to the ground, next to a young man to help her pick up, she not only did not thank, but blame people more care, really do not know how good!

3
Xiǎowáng
小王
shì
shíhǎodǎi
不识好歹
de
jiāhuo
家伙
  
,
biéren
别人
hǎoxīn
好心
bāng
zhǐchū
指出
zuò
作业
zhōng
de
cuò
错误
  
,
què
wéi
以为
biéren
别人
shì
zài
cháoxiào
嘲笑
  

Xiao Wang is a guy who doesn't know what to do, and others are kind enough to help him point out mistakes in his homework, but he thinks others are laughing at him.

Related

不识好歹